| About this Abstract |
| Meeting |
10th International Symposium on Superalloy 718 and Derivatives (2023)
|
| Symposium
|
Superalloy 718 and Derivatives
|
| Presentation Title |
(LBN - P4) Laser-Powder Bed Fusion Additive Manufacturing of Haynes 282 Concentrating Solar-Thermal Power (CSP) Plant Parts: Printability, Geometry, Surface, and Microstructure. |
| Author(s) |
Junwon Seo, Nicholas Lamprinakos, Anthony D. Rollett |
| On-Site Speaker (Planned) |
Junwon Seo |
| Abstract Scope |
Laser powder bed fusion (L-PBF) additive manufacturing has been successful in fabricating simple geometries using high-temperature materials such as Inconel 718 and Haynes 282 (H282). However, printing larger and more complex geometries can be challenging due to the variations in thermal profiles adjacent to the melt pool compared to printing simple geometries. We describe the fabrication of part-scale specimens, including molten salt-to-supercritical CO2 heat exchangers and supercritical CO2 solar receivers, for concentrating solar-thermal power (CSP) generation. The specimen designs were optimized to maximize performance while ensuring printability and resistance to high temperatures and pressures by printing and analyzing sub-scale units. The effects of various process parameters, including scan strategy, laser power, and scanning speed, on the density, surface roughness, and microstructure at various regions of the complex geometries were investigated. Furthermore, the effects of heat treatment on large-scale specimens were investigated to ensure mechanical integrity throughout the components. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |